{"id":5676,"date":"2020-10-17T09:25:32","date_gmt":"2020-10-17T09:25:32","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5676"},"modified":"2020-10-16T09:30:33","modified_gmt":"2020-10-16T09:30:33","slug":"purify-molten-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/purify-molten-aluminum\/","title":{"rendered":"Purificar el aluminio fundido"},"content":{"rendered":"<p>En la industria aeroespacial, los requisitos que deben cumplir las piezas fundidas de aleaci\u00f3n de aluminio son muy exigentes. La mayor\u00eda de las empresas siguen utilizando operaciones de desgasificaci\u00f3n rotativa con gas inerte y de eliminaci\u00f3n de escoria para purificar el aluminio fundido.<\/p>\n<p>En el caso del aluminio fundido con requisitos m\u00e1s exigentes, este puede cumplir los requisitos del producto tras ser tratado con hexacloroetano.<\/p>\n<p>Debido a los reducidos requisitos de fundici\u00f3n y a la obsolescencia de los equipos y la tecnolog\u00eda, las peque\u00f1as empresas de fundici\u00f3n a presi\u00f3n de aleaciones de aluminio suelen recurrir a la fundici\u00f3n en hornos situados junto a las m\u00e1quinas y realizan un tratamiento sencillo de eliminaci\u00f3n de escorias para producir las piezas fundidas.<\/p>\n<p>Es mejor utilizar un gas inerte o no t\u00f3xico <a href=\"http:\/\/www.alalloycasting.com\/es\/refining-flux\/\">agente refinador<\/a> para llevar a cabo alg\u00fan tratamiento de refinado sencillo o filtrar el aluminio l\u00edquido con <a href=\"http:\/\/www.alalloycasting.com\/es\/ceramic-foam-filter-pal\/\">filtro de espuma cer\u00e1mica<\/a> placa, y se puede poner en producci\u00f3n sin necesidad de comprobar el efecto del aluminio fundido.<\/p>\n<p>La calidad del aluminio l\u00edquido producido mediante este m\u00e9todo es deficiente, el nivel de producci\u00f3n es bajo y el coste es elevado.<\/p>\n<p>Algunas empresas de gran y mediano tama\u00f1o dedicadas a la fundici\u00f3n a presi\u00f3n de aleaciones de aluminio suelen adoptar m\u00e9todos como la fundici\u00f3n centralizada, la eliminaci\u00f3n de escoria en el horno, la subcontrataci\u00f3n de los procesos de desgasificaci\u00f3n y eliminaci\u00f3n de escoria, y, a continuaci\u00f3n, el traslado al horno para organizar la producci\u00f3n.<\/p>\n<p>En el caso de algunas piezas de fundici\u00f3n con requisitos exigentes, estas empresas suelen utilizar un horno de fusi\u00f3n continua como horno auxiliar de la m\u00e1quina.<\/p>\n<p>El aluminio fundido se desairea en l\u00ednea con gas inerte y se filtra mediante espuma cer\u00e1mica para producir piezas de fundici\u00f3n.<\/p>\n<p>El equipo de desgasificaci\u00f3n hace girar un inyector sumergido en la masa fundida, de modo que el gas de purga (normalmente un gas inerte) se distribuya por la masa fundida en forma de peque\u00f1as burbujas para purificar la masa fundida de aluminio y eliminar el hidr\u00f3geno.<\/p>\n<p>Cuanto menos y con mayor frecuencia se eliminen las burbujas, mejor se podr\u00e1 desgasificar la masa fundida y no habr\u00e1 impurezas de \u00f3xido.<\/p>\n<p>Los equipos de desgasificaci\u00f3n no solo se pueden utilizar para purificar el aluminio fundido durante el proceso de desgasificaci\u00f3n, sino que tambi\u00e9n permiten eliminar el \u00f3xido residual de la superficie mediante un deflector (cuchilla) cuando funcionan correctamente.<\/p>\n<p>La desgasificaci\u00f3n rotativa suele utilizarse en combinaci\u00f3n con un gas inerte, como el nitr\u00f3geno, adecuado para la masa fundida en cuesti\u00f3n.<\/p>\n<p>En algunos casos, los gases de purga inertes tambi\u00e9n se mezclan con bajas concentraciones (&lt; 2,5%) de hexafluoruro de azufre o cloro.<\/p>\n<p>En el aluminio fundido, el contenido de hidr\u00f3geno se reduce considerablemente en comparaci\u00f3n con otros m\u00e9todos de purga, gracias a la distribuci\u00f3n homog\u00e9nea del gas de purga del rotor.<\/p>\n<p>Gracias a este principio, se puede limpiar pr\u00e1cticamente cualquier superficie de ba\u00f1o, se consigue una distribuci\u00f3n muy amplia de las burbujas en todo el recipiente de tratamiento y se puede acortar el tiempo de tratamiento mediante una desgasificaci\u00f3n y una purificaci\u00f3n de la masa fundida eficaces.<\/p>","protected":false},"excerpt":{"rendered":"<p>In aerospace industry, the requirements of casting aluminum alloy castings are very high. Most companies still use inert gas rotary degassing and slag removal operations&hellip;<\/p>","protected":false},"author":1,"featured_media":5677,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5676","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Purify Molten Aluminum by Inert Gas Rotary Degassing<\/title>\n<meta name=\"description\" content=\"Most companies still use inert gas rotary degassing and slag removal operations to purify molten aluminum with higher requirements.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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